Pump-protector.



Patented N0v.4,1913.

J. J. DEUEL.

I PUMP PROTECTOR.

APPLICATION FILED JULY 23, 1912.

7 1M:- Josgvh 11 Dead UNITED STATES PATENT omuon.

JOSEPH J. DEUEL, OF BAKERSFIELD, CALIFORNIA, ASSIGNOR T0 AXELSON MACHINE (70., 015 LOS ANGELES, CALIFORNIA, A FIBZM COMPOSIED OF CHARLES F. AXELSQN AND GUSTAVUS A. AXELSON.

PUMP-PROTECTOR.

Specification of Letters Patent.

Patented Nov. 4, 1913.

To all whom 2'15 may concern.

Be it known that I, JOSEPH J. DEUEL, a citizen of the United States, residing at Bakersfield, in the county of Kern and State of California, have invented a new and useful Pump-Protector, of which the following is a specification.

This invention relates to an appliance to be used in connection with deep well pumps, such as the pumps of oil wells and deep water wells which have a working barrel and pump tubing. It is found in practice that the working barrels in which the plungers of said pumps reciprocate are preferably made of cast iron as that material wears smoother and longer; and said working barrels are liable to become broken and in case of breaking much expense and loss of time means easily assembled and applied to the pump whereby breakage of the working barrel is avoided and the serious difficulties referred to are entirely obviated.

My invention consists of the combination with a pump tubing, of a working barrel rigidly secured to the lower end of the tubing; an anchor extending downwardly from the working barrel; and a loose connection between the tubing and the anchor; so that if the working barrel breaks in two pieces, the part below the break may be removed from the well by removing the tubing.

The invention may be carried out in various ways.

The accompanying drawings illustrate the invention.

Figure 1 is a fragmental axial section of the invention applied in one manner to the tubing and working barrel of a deep well pump. Fig. 2 is an enlarged plan cross section on line :2 Fig. 1. Fig. 3 is an axial section of the invention as applied with the protecting case and collars loose from the tubing. Fig. 4 is an axial section of the protector as applied with another form of cast-iron working barrel omitting the anchor.

Referring first t0 the form shown in Fig.

1, the top collar 1 is of steel and provided with internal threads 2 at the top to screw onto the lower end of the pump tubing 3; and is provided at its lower end with the internal threads 4 and the external threads 5. The threaded portions 2 and 4 are preferably tapered as in the case of oil well tools, so that the parts joined thereto may be tightly screwed thereon. A steel nipple 6 is screwed into the inner lower threaded portion 4 and is provided at its lower end with a taper-threaded portion 7 to which the working barrel 8 is secured, being in the instance shown fastened thereto by the taper-threaded steel collar 9. The bore of,

the steel nipple 6 is of greater diameter than the cast-iron working barrel, so that the pump plunger, not shown, will fit the working barrel and not touch the nipple. The nipple 6 and the pump tubing 3 are preferably of practically the same internal diameter. A case 10 preferably formed of a single steel tube is screwed tightly onto the threaded portion 5' and has a screw-threaded portion 11 into which is tightly screwed the internal steel foot collar 12, the inside of the case 10 being thus provided with an annular shoulder 13 below the working barrel 8 that may be connected at its lower end with an anchor pipe 14; which in the instance shown is screwed into a steel collar 15 that is screwed onto the threaded portion 16 at the lower end of the cast-iron working barrel 8. The anchor 14 is common in deep well pumps and no novelty is claimed therefor. The steel collars 9 and 15 are of less external diameter than the bore of the case 10, so that the working barrel is practically free from the case,being suspended from the head collar 1. The bore of the foot collar 12 is of less diameter than the working barrel 8 and its collars 15 and 9 so that there is a clearance between the anchor 14 and the internal foot collar 12, thus to avoid transmission of ars from the case to the pump.

In the form shown in Fig. 3 the working barrel 17 is connected to the lower end of the tubing 18 by the nipple 19 and is screwed into the valve seat and thickened collar 20 at the bottom. Outside the tubing 18 and loose thereon is the head collar 21 of less internal diameter than and resting on the collar 19 and having at its lower end a screw-threaded portion 22 onto which the case. two, the part below the break may be reis screwed the steel case 10 to the lower end of which is fixed the steel collar 23 forming an internal annular collar 24: the aperture through which is of less diameter than the external diameter of the working barrel so that the working barrel and its EtCl-JU-IlGtS cannot escape therethrough in case they become broken.

T he form shown in Flg. a is much the same as that shown in Fig. 1, the working barrel 17 bein cast inte ral with the collars 25 and 26 and the footcollar 12 and case 10 being rig-id with the pump tubing The method of assembling is practically i the same as that which will now be described f be screwed into the lower end of the case. If it is desired to use the anchor the same may be comiected to the working barrel 'betore the case is screwed onto the head collar.

To assemble the form shown in Fig. 3;

the collar 21 will first be slipped onto the tubing 18, then the working barrel 1'? will be secured by the nipple 19 to the tubing by screwing the parts together and the case 1 10 maybe screwed onto the threaded portion 22 either betoreor atter'the collar 23 is screwed into said case 10. As with the form shown in Fig. 1 the anchor may be applied or-notat the choice'otthe constructor.

The protector thus constructed and carried by the pump tubing, being applied in combination with the pump tubing and working barrel, protects the cast-iron working barrel from contact with exterior bodies and therefore avoids liabilit-yof breakage; and in case any breakage occurs, the internal shoulder of the steel :foot" collar 12 or 23 prevents the escape of theypieces from If the working barrel breaks in moved from the well by'removing the pump tubing.

The desired service .is in good measure form, but in the form shown in Figsl and eflectedby the invention as-applied in either 4 the parts are all securely :fixed "together while in:the form shown in Fig; 3 the case,

with its shoulder or internal projection 24:}

is loosely connected with the tubing.

bar-rel breaks in two, the part below the break may be withdrawn with the pump tubing.

'2. A pump protector comprising, a case adapted for inclosing the working barrel of a pump; means for connecting the case to the lower end of the pump tubing; and means for looselyconnecting the lower end of the case to the lower end'of the working barrel, so that it the working barrel breaks 1 in two, the part below the break may be removed by removingthe-tubing.

3. The combination with a pump tubing, of a working barrel rigidly secured to the lower'endzof the tubing; an anchor extending downwardly from the working barrel; a case adapted to inclose the working barrel; said case being longer than the working barrel; a connection between the upper end of the case and the pump tubing; and a looseconnection between the lower end of the case and the lower end of the working barrel; sothat itthe working barrel breaks in two, the part below the break may be withdrawn by withdrawing :the pump tubing.

4. In a pump :the combination with the tubing-and working-barrel, of a collar fixed to the tubing and of greater diameter than the tubing, a collar of greater-diameter than the tubing :loosely :mounted on the :tubing above and resting on the first-named collar, a case itastened to the loose collar and inclosing the working barrel and provided with an internal projection below the working barrel to (prevent escape thereof.

' A pump protector comprising, the combination with a tubing and working barrel of :a case' longer than the working barrel and adapted to inclose the working barrel; :a loose connection between the 'upper end 0f the case and the lower end of In testimony whereof, I have hereunto set my hand at Bakersfield, California, this 16th .dayzot' July, 1912. V

JOSEPH J 'DEUEL.

In presence of? VIERA Gone, :H. C. Yarns.

Copies of this patent may beobtaine'd for five cents each, by addressing the Commissioner of 'I'atents, Washington, D. 0'. 

